Ancient God of Evil or In the Forest of the Dreaming Dead - Unanimated
A Velvet Creation or Mirrorworlds - Eucharist
Voice of Harmony - Execration
Far Away from the Sun - Sacramentum
Conception of Madness - Sil Khannaz
Forever... or Day Into Night - Quo Vadis

Those Quo Vadis albums are very catchy melodic death/thrash, but there a little bit overly cheery sounding. The Sil Khannaz album is probably closest to what you're searching for; totally maniacal thrashing death with a restrained sense of melody.